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Congenital cataract

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https://www.readbyqxmd.com/read/28190459/mutations-in-inpp5k-cause-a-form-of-congenital-muscular-dystrophy-overlapping-marinesco-sj%C3%A3-gren-syndrome-and-dystroglycanopathy
#1
Daniel P S Osborn, Heather L Pond, Neda Mazaheri, Jeremy Dejardin, Christopher J Munn, Khaloob Mushref, Edmund S Cauley, Isabella Moroni, Maria Barbara Pasanisi, Elizabeth A Sellars, R Sean Hill, Jennifer N Partlow, Rebecca K Willaert, Jaipreet Bharj, Reza Azizi Malamiri, Hamid Galehdari, Gholamreza Shariati, Reza Maroofian, Marina Mora, Laura E Swan, Thomas Voit, Francesco J Conti, Yalda Jamshidi, M Chiara Manzini
Congenital muscular dystrophies display a wide phenotypic and genetic heterogeneity. The combination of clinical, biochemical, and molecular genetic findings must be considered to obtain the precise diagnosis and provide appropriate genetic counselling. Here we report five individuals from four families presenting with variable clinical features including muscular dystrophy with a reduction in dystroglycan glycosylation, short stature, intellectual disability, and cataracts, overlapping both the dystroglycanopathies and Marinesco-Sjögren syndrome...
February 1, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/28190456/mutations-in-inpp5k-encoding-a-phosphoinositide-5-phosphatase-cause-congenital-muscular-dystrophy-with-cataracts-and-mild-cognitive-impairment
#2
Manuela Wiessner, Andreas Roos, Christopher J Munn, Ranjith Viswanathan, Tamieka Whyte, Dan Cox, Benedikt Schoser, Caroline Sewry, Helen Roper, Rahul Phadke, Chiara Marini Bettolo, Rita Barresi, Richard Charlton, Carsten G Bönnemann, Osório Abath Neto, Umbertina C Reed, Edmar Zanoteli, Cristiane Araújo Martins Moreno, Birgit Ertl-Wagner, Rolf Stucka, Christian De Goede, Tamiris Borges da Silva, Denisa Hathazi, Margherita Dell'Aica, René P Zahedi, Simone Thiele, Juliane Müller, Helen Kingston, Susanna Müller, Elizabeth Curtis, Maggie C Walter, Tim M Strom, Volker Straub, Kate Bushby, Francesco Muntoni, Laura E Swan, Hanns Lochmüller, Jan Senderek
Phosphoinositides are small phospholipids that control diverse cellular downstream signaling events. Their spatial and temporal availability is tightly regulated by a set of specific lipid kinases and phosphatases. Congenital muscular dystrophies are hereditary disorders characterized by hypotonia and weakness from birth with variable eye and central nervous system involvement. In individuals exhibiting congenital muscular dystrophy, early-onset cataracts, and mild intellectual disability but normal cranial magnetic resonance imaging, we identified bi-allelic mutations in INPP5K, encoding inositol polyphosphate-5-phosphatase K...
February 8, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/28179137/the-impact-of-different-mutations-at-arg54-on-structure-chaperone-like-activity-and-oligomerization-state-of-human-%C3%AE-a-crystallin-the-pathomechanism-underlying-congenital-cataract-causing-mutations-r54l-r54p-and-r54c
#3
Kazem Khoshaman, Reza Yousefi, Ali Mohammad Tamaddon, Samira Sadat Abolmaali, Ahmad Oryan, Ali Akbar Moosavi-Movahedi, Boris I Kurganov
A major part of cataractogenic mutations in human αA-Crystallin (αA-Cry) occurs at Arg residues. While Arg54 is highly conserved within different species, the cataractogenic mutations R54L, R54P and R54C have been recently identified in CRYAA gene, encoding human αA-Cry. The detailed structural and functional aspects, stability and amyloidogenic properties of αA-Cry were determined upon the above-mentioned missense mutations, using various spectroscopic techniques, gel electrophoresis, electron microscopy, size exclusion HPLC analyses, and chaperone-like activity assay...
February 4, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28157223/novel-variants-in-pax6-gene-caused-congenital-aniridia-in-two-chinese-families
#4
R Zhang, S Linpeng, X Wei, H Li, Y Huang, J Guo, Q Wu, D Liang, L Wu
PurposeTo reveal the underlying genetic defect in two four-generation Chinese families with aniridia and explore the pathologic mechanism.MethodsFull ophthalmic examinations were performed in two families with aniridia. The PAX6 gene was directly sequenced in patients of two families, and the detected variants were screened in unaffected family members and two hundred unrelated healthy controls. Real-time quantitative PCR was used to explore pathologic mechanisms of the two variants.ResultsAniridia, cataract, and oscillatory nystagmus were observed in patients of the two families...
February 3, 2017: Eye
https://www.readbyqxmd.com/read/28155230/further-delineation-of-a-rare-recessive-encephalomyopathy-linked-to-mutations-in-gfer-thanks-to-data-sharing-of-whole-exome-sequencing-data
#5
S Nambot, D Gavrilov, J Thevenon, A L Bruel, M Bainbridge, M Rio, C Goizet, A Rötig, J Jaeken, N Niu, F Xia, A Vital, N Houcinat, F Mochel, P Kuentz, D Lehalle, Y Duffourd, J B Rivière, C Thauvin-Robinet, A L Beaudet, L Faivre
Alterations in GFER gene have been associated with progressive mitochondrial myopathy, congenital cataracts, hearing loss, developmental delay, lactic acidosis and respiratory chain deficiency in 3 siblings born to consanguineous Moroccan parents by homozygosity mapping and candidate gene approach (OMIM#613076). Next generation sequencing recently confirmed this association by the finding of compound heterozygous variants in 19-year-old girl with a strikingly similar phenotype, but this ultra-rare entity remains however unknown from most of the scientific community...
February 2, 2017: Clinical Genetics
https://www.readbyqxmd.com/read/28149769/a-novel-splice-site-mutation-of-cryba3-a1-gene-associated-with-congenital-cataract-in-a-chinese-family
#6
Meng-Han Wu, Yin-Hui Yu, Qin-Long Hao, Xiao-Hua Gong, Ke Yao
AIM: To identify the disease-causing mutation responsible for the presence of congenital cataract in a Chinese family. METHODS: The study recruited a four-generation Chinese pedigree affected by autosomal dominant congenital cataract (ADCC). Family history and the history of cataract extraction were recorded. Blood samples were collected from individuals for DNA extraction. Direct sequencing of congenital cataract-associated genes was performed. Single-strand conformational polymorphism and bioinformatic analysis were conducted to further study the mutation...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28148925/a-novel-mutation-in-the-proteolytic-domain-of-lonp1-causes-atypical-codas-syndrome
#7
Takehiko Inui, Mai Anzai, Yusuke Takezawa, Wakaba Endo, Yosuke Kakisaka, Atsuo Kikuchi, Akira Onuma, Shigeo Kure, Ichizo Nishino, Chihiro Ohba, Hirotomo Saitsu, Naomichi Matsumoto, Kazuhiro Haginoya
Cerebral, ocular, dental, auricular, skeletal (CODAS) syndrome is a rare autosomal recessive multisystem disorder caused by mutations in LONP1. It is characterized by intellectual disability, cataracts, delayed tooth eruption, malformed auricles and skeletal abnormalities. We performed whole-exome sequencing on a 12-year-old Japanese male with severe intellectual disability, congenital bilateral cataracts, spasticity, hypotonia with motor regression and progressive cerebellar atrophy with hyperintensity of the cerebellar cortex on T2-weighted images...
February 2, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28141735/anaesthesia-and-orphan-disease-a-child-with-congenital-cataract-facial-dysmorphism-neuropathy-ccfdn-syndrome-a-case-report
#8
Oliver W Masters, Elonka Bergmans, Karl-Christian Thies
No abstract text is available yet for this article.
March 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28135318/correction-missense-mutations-in-cryab-are-liable-for-recessive-congenital-cataracts
#9
Xiaodong Jiao, Shahid Y Khan, Bushra Irum, Arif O Khan, Qiwei Wang, Firoz Kabir, Asma A Khan, Tayyab Husnain, Javed Akram, Sheikh Riazuddin, J Fielding Hejtmancik, S Amer Riazuddin
[This corrects the article DOI: 10.1371/journal.pone.0137973.].
2017: PloS One
https://www.readbyqxmd.com/read/28135291/congenital-cataract-in-gpr161vl-vl-mice-is-modified-by-proximal-chromosome-15
#10
Bo I Li, Myka R Ababon, Paul G Matteson, Yong Lin, Vikas Nanda, James H Millonig
The morphology and severity of human congenital cataract varies even among individuals with the same mutation, suggesting that genetic background modifies phenotypic penetrance. The spontaneous mouse mutant, vacuolated lens (vl), arose on the C3H/HeSnJ background. The mutation disrupts secondary lens fiber development by E16.5, leading to full penetrance of congenital cataract. The vl locus was mapped to a frameshift deletion in the orphan G protein-coupled receptor, Gpr161, which is expressed in differentiating lens fiber cells...
2017: PloS One
https://www.readbyqxmd.com/read/28131617/betab2-crystallin-mutations-associated-with-cataract-and-glaucoma-leads-to-mitochondrial-alterations-in-lens-epithelial-cells-and-retinal-neurons
#11
Jennifer E Dulle, Anne Rübsam, Sarah J Garnai, Hemant S Pawar, Patrice E Fort
Crystallin proteins are the most prominent protein of the lens and have been increasingly shown to play critical roles in other tissues, especially the retina. Members of all 3 sub-families of crystallins, alpha-, beta- and gamma-crystallins have been reported in the retina during diabetes, traumatic injury and other retinal diseases. While their specific role in the retina is still unclear and may vary, beta-crystallin proteins have been shown to play a critical role in ganglion cell survival following trauma...
January 25, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28129423/novel-pex11b-mutations-extend-the-peroxisome-biogenesis-disorder-14b-phenotypic-spectrum-and-underscore-congenital-cataract-as-an-early-feature
#12
Rachel L Taylor, Mark T Handley, Sarah Waller, Christopher Campbell, Jill Urquhart, Alison M Meynert, Jamie M Ellingford, Deirdre Donnelly, Gisela Wilcox, I Chris Lloyd, Helen Mundy, David R FitzPatrick, Charu Deshpande, Jill Clayton-Smith, Graeme C Black
Purpose: Peroxisomes perform complex metabolic and catabolic functions essential for normal growth and development. Mutations in 14 genes cause a spectrum of peroxisomal disease in humans. Most recently, PEX11B was associated with an atypical peroxisome biogenesis disorder (PBD) in a single individual. In this study, we identify further PEX11B cases and delineate associated phenotypes. Methods: Probands from three families underwent next generation sequencing (NGS) for diagnosis of a multisystem developmental disorder...
January 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28128793/quality-of-life-and-functional-vision-in-children-treated-for-cataract-a-cross-sectional-study
#13
V K Tailor, Y Abou-Rayyah, J Brookes, P T Khaw, M Papadopoulos, G G W Adams, C Bunce, A Dahlmann-Noor
PurposeChildren with cataract and their families face intensive medical and surgical management, with numerous hospital attendances, topical medications, and surgical procedures, as well as uncertainty about the child's future visual ability, education, and independence. Little is known about the impact on functional visual ability, vision-, and health-related quality of life (VR-, HR-QoL).Patients and methodsSeventy two children aged 2-16 years (mean 8.45, SD 4.1) treated for developmental or secondary cataract and their parents/carers completed three validated instruments measuring functional visual ability, VR-, and HR-QoL: the Cardiff Visual Ability Questionnaire for Children (CVAQC), Impact of Vision Impairment for Children (IVI-C), and PedsQL V 4...
January 27, 2017: Eye
https://www.readbyqxmd.com/read/28128429/-neurofibromatosis-type-2-in-childhood-a-clinical-characterization
#14
C M Hinojosa-Mateo, J A Reche-Sainz, A Hernandez-Nunez, M Ramos-Lopez, A Arpa-Fernandez, D Natera-de Benito
INTRODUCTION: Neurofibromatosis type 2 (NF2) is a dominantly inherited neuroectodermal syndrome that predispose to the development of tumors of the central and peripheral nervous system. Additional features include eye and skin abnormalities. CASE REPORT: A 12-year old male with diagnosis of MF2 according to Baser et al and presentation in childhood was included. A comprehensive bibliographic review of evolution of the diagnostic criteria for NF2 in children was performed...
February 1, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28124626/focus-on-lens-connexins
#15
REVIEW
Viviana M Berthoud, Anaclet Ngezahayo
The lens is an avascular organ composed of an anterior epithelial cell layer and fiber cells that form the bulk of the organ. The lens expresses connexin43 (Cx43), connexin46 (Cx46) and connexin50 (Cx50). Epithelial Cx50 has critical roles in cell proliferation and differentiation, likely involving growth factor-dependent signaling pathways. Both Cx46 and Cx50 are crucial for lens transparency; mutations in their genes have been linked to congenital and age-related cataracts. Congenital cataract-associated connexin mutants can affect protein trafficking, stability and/or function, and the functional effects may differ between gap junction channels and hemichannels...
January 17, 2017: BMC Cell Biology
https://www.readbyqxmd.com/read/28120589/identification-of-a-de-novo-3bp-deletion-in-cryba1-a3-gene-in-autosomal-dominant-congenital-cataract
#16
Masoumeh Mohebi, Abolfazl Akbari, Nahid Babaei, Abdolrahim Sadeghi, Mansour Heidari
Autosomal dominant congenital cataract (ADCC) is the most common form of inherited cataracts and accounts for one-third of congenital cataracts. Heterozygous null mutations in the crystallin genes are the major cause of the ADCC. This study aims to detect the mutational spectrum of four crystallin genes, CRYBA1/A3, CRYBB1, CRYBB2 and CRYGD in an Iranian family. Genomic DNA was isolated from whole blood cells from theproband and other family members. The coding regions and flanking intronicsequences of crystalline genes were analyzed by Sanger sequencing in aproband with ADCC...
December 2016: Acta Medica Iranica
https://www.readbyqxmd.com/read/28107085/registry-of-ocular-anomalies-among-patients-with-genetic-disorders-attending-the-clinical-genetics-department-at-the-national-research-centre-in-egypt
#17
Ola M Eid, Sawsan Abdel Hady, Ahmed El-Kotoury, Khalda A Said, Karima Rafat, Hala T El-Bassyouni
BACKGROUND: The congenital abnormalities of eyes are a major cause of visual impairment throughout the world. Prevention of visual impairment due to congenital and infantile abnormalities of eyes is very important. The aim of this study is to evaluate the frequency and types of congenital ocular anomalies among patients with genetic disorders. PATIENTS AND METHODS: This is a retrospective study that was conducted in the National Research Center, Egypt at the Clinical Genetics Department over a 4-year period...
January 20, 2017: Ophthalmic Genetics
https://www.readbyqxmd.com/read/28091778/hospital-based-surveillance-of-congenital-rubella-syndrome-in-indonesia
#18
Elisabeth Siti Herini, Gunadi, Agung Triono, Asal Wahyuni Erlin Mulyadi, Niprida Mardin, Rusipah, Yati Soenarto, Susan E Reef
: Congenital rubella syndrome (CRS) has serious consequences, such as miscarriage, stillbirth, and severe birth defects in infants, resulting from rubella virus infection during pregnancy. However, rubella vaccine has not yet been implemented in Indonesia. This study aimed (1) to estimate the incidence of CRS in Indonesia, (2) describe the clinical features of CRS at our referral hospital, and (3) pilot a CRS surveillance system to be extended to other hospitals. We conducted a 4-month prospective surveillance study of infants aged <1 year with suspected CRS in 2013 at an Indonesian hospital...
January 13, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28076398/identification-of-a-novel-mutation-in-brd4-that-causes-autosomal-dominant-syndromic-congenital-cataracts-associated-with-other-neuro-skeletal-anomalies
#19
Hyun-Seok Jin, Jeonhyun Kim, Woori Kwak, Hyeonsoo Jeong, Gyu-Bin Lim, Cha Gon Lee
Congenital cataracts can occur as a non-syndromic isolated ocular disease or as a part of genetic syndromes accompanied by a multi-systemic disease. Approximately 50% of all congenital cataract cases have a heterogeneous genetic basis. Here, we describe three generations of a family with an autosomal dominant inheritance pattern and common complex phenotypes, including bilateral congenital cataracts, short stature, macrocephaly, and minor skeletal anomalies. We did not find any chromosomal aberrations or gene copy number abnormalities using conventional genetic tests; accordingly, we conducted whole-exome sequencing (WES) to identify disease-causing genetic alterations in this family...
2017: PloS One
https://www.readbyqxmd.com/read/28061824/a-novel-nhs-mutation-causes-nance-horan-syndrome-in-a-chinese-family
#20
Qi Tian, Yunping Li, Rizwana Kousar, Hui Guo, Fenglan Peng, Yu Zheng, Xiaohua Yang, Zhigao Long, Runyi Tian, Kun Xia, Haiying Lin, Qian Pan
BACKGROUND: Nance-Horan Syndrome (NHS) (OMIM: 302350) is a rare X-linked developmental disorder characterized by bilateral congenital cataracts, with occasional dental anomalies, characteristic dysmorphic features, brachymetacarpia and mental retardation. Carrier females exhibit similar manifestations that are less severe than in affected males. METHODS: Here, we report a four-generation Chinese family with multiple affected individuals presenting Nance-Horan Syndrome...
January 7, 2017: BMC Medical Genetics
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